Final answer:
Warren Buffett invested $600 million in Gillette the year it introduced the Sensor razor, showcasing his investment acumen. Gillette, known for its personal care products, later became part of Procter & Gamble.
Step-by-step explanation:
The company that Warren Buffett invested $600 million in the year it introduced the Sensor razor was Gillette. The introduction of the Sensor razor was a significant innovation in the personal care market and was well-received. Warren Buffett is known for his savvy investment choices, and this move was no exception. The investment in Gillette paid off as the company continued to grow and eventually was acquired by Procter & Gamble in 2005.